Disc1GrinblatS08

Disc1GrinblatS08 - Introductory Biology 151 Discussion...

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Introductory Biology 151 Discussion Homework – Week of March 3 to 7, 20081 Answer the following questions before coming to discussion section. No need to put your answers in the dropbox. During the discussion section, you will need much of this information to both explain and model DNA replication and explain how the Meselson and Stahl experiments eliminated the conservative and dispersive models of replication. 1. If 20% of the DNA in a guinea pig cell is adenine, what percent is cytosine? How can you determine this? 30% would be cytosine because adenine is always paired up with thymine, meaning that there would be just as much thymine as adenine. That leaves 60% left and cytosine is always paired with guanine. 2. Review the structure of DNA nucleotides and the information provided by the experiments of Chargaff and Rosalind Franklin. Explain how Watson and Crick used this information to discover the structure of DNA.
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This note was uploaded on 07/13/2008 for the course BIO 151 taught by Professor Grinblat during the Spring '08 term at Wisconsin.

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Disc1GrinblatS08 - Introductory Biology 151 Discussion...

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